Nepean Bay Weather Forecast

    • 13
    • 20

    Windy. Cloudy

    • 11
    • 21

    Becoming windy. Cloudy

    • 11
    • 23

    Partly cloudy

    • 12
    • 27

    Mostly sunny

    • 12
    • 25

    Partly cloudy

    • 12
    • 25

    Partly cloudy

    • 12
    • 29

    Sunny

Today 30 Dec Kangaroo Island

Cloudy. Winds southerly 30 to 40 km/h turning southeasterly 30 to 45 km/h in the late morning and afternoon. Daytime maximum temperatures around 20.

Investigator Strait Coastal Waters

Wind
Southerly 20 to 25 knots turning southeasterly 20 to 30 knots in the late morning and early afternoon.
Seas
1.5 to 2.5 metres.
1st Swell
West to southwesterly below 1 metre.
Weather
Cloudy.
Weather Situation
A weak ridge of high pressure will develop south of the Bight today, persisting into Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

December Temperature

Kingscote Airport (7km)

  • Lowest 7 December, 2025

    3.8 °C

  • Average December

    18 °C

  • Highest 18 December, 2025

    41 °C

Climate (2020–Present)

Kingscote Airport (7km)

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  • Average Low 2020–2025

    9.2 °C

  • Average 2020–2025

    14.7 °C

  • Average High 2020–2025

    21.1 °C
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